#Question id: 9211
#Section 2: Evolution
Of the following ecosystem types, which have been impacted the most by humans?
#Question id: 4709
#Section 2: Evolution
The horizontal axis of the cladogram depicted below is a timeline that extends from 100,000 years ago to the present; the vertical axis represents nothing in particular. The labeled branch points on the tree (V-Z) represent various common ancestors. Let's say that only since 50,000 years ago has there been enough variation between the lineages depicted here to separate them into distinct species, and only the tips of the lineages on this tree represent distinct species.
In Darwin's tree of life, each fork in the tree represents ________.
#Question id: 16856
#General Aptitude
#Question id: 3375
#Section 2: Evolution
Evolutionary force | Caused | ||
A | Mutation | i | Increase genetic variation within population |
B | Genetic Drift | ii | Decrease genetic variation within population |
C | Migration | iii | Decrease genetic variation between population |
iv | Increase genetic variation between population |
Which of the following combination is correct?
#Question id: 10817
#Section 1: Ecology
Removal of a __________________ from a community affects community structure significantly.